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Inequalities work the same way as equations. The difference is the number of solutions.

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Presentation on theme: "Inequalities work the same way as equations. The difference is the number of solutions."— Presentation transcript:

1 Inequalities work the same way as equations. The difference is the number of solutions.

2 Here are the symbols of inequalities: < means less than > means greater than < means less than OR equal to > means greater than OR equal to

3 Here are the symbols of inequalities: < means less than > means greater than < means less than OR equal to > means greater than OR equal to x < 4 is read x is less than 4

4 Here are the symbols of inequalities: < means less than > means greater than < means less than OR equal to > means greater than OR equal to x > 4 is read x is greater than 4

5 Here are the symbols of inequalities: < means less than > means greater than < means less than OR equal to > means greater than OR equal to x < 4 is read x is less than OR equal to 4

6 Here are the symbols of inequalities: < means less than > means greater than < means less than OR equal to > means greater than OR equal to x > 4 is read x is greater than OR equal to 4

7 1.Do you need to use the distributive property? 2(y + 9) + y < 12

8 1.Do you need to use the distributive property? 2y + 18 + y < 12

9 1.Do you need to use the distributive property? 2.Are there like terms to combine? 2y + 18 + y < 12

10 1.Do you need to use the distributive property? 2.Are there like terms to combine? Remember to use the commutative property. 2y + 18 + y < 12

11 1.Do you need to use the distributive property? 2.Are there like terms to combine? Remember to use the commutative property. 2y + y + 18 < 12

12 1.Do you need to use the distributive property? 2.Are there like terms to combine? Remember to use the associative property, too. (2y + y) + 18 < 12

13 1.Do you need to use the distributive property? 2.Are there like terms to combine? 3y + 18 < 12

14 1.Do you need to use the distributive property? 2.Are there like terms to combine? 3.Solve terms first. 3y + 18 < 12

15 1.Do you need to use the distributive property? 2.Are there like terms to combine? 3.Solve terms first. 3y + (18 + – 18) < (12 + – 18)

16 1.Do you need to use the distributive property? 2.Are there like terms to combine? 3.Solve terms first. 3y < – 6

17 1.Do you need to use the distributive property? 2.Are there like terms to combine? 3.Solve terms first. 4.Solve factors second. 3y < – 6

18 1.Do you need to use the distributive property? 2.Are there like terms to combine? 3.Solve terms first. 4.Solve factors second. (  )3y < – 6(  )

19 1.Do you need to use the distributive property? 2.Are there like terms to combine? 3.Solve terms first. 4.Solve factors second. y < – 2

20 1.Do you need to use the distributive property? 2.Are there like terms to combine? 3.Solve terms first. 4.Solve factors second. y < – 2 5. Number Set { – 3, – 4, – 5, …}

21 When graphing inequalities, the way it is graphed describes the situation. - (a dot) means equal to - (a circle) means not equal to Arrow - means greater than or less than. – 6 – 5 – 4 – 3 – 2 – 1 0 1 2 For Example: y < 1 says y is less than 1.

22 When graphing inequalities, the way it is graphed describes the situation. - (a dot) means equal to - (a circle) means not equal to Arrow - means greater than or less than. – 6 – 5 – 4 – 3 – 2 – 1 0 1 2 For Example: y > – 3 says y is greater than – 3.

23 When graphing inequalities, the way it is graphed describes the situation. - (a dot) means equal to - (a circle) means not equal to Arrow - means greater than or less than. – 6 – 5 – 4 – 3 – 2 – 1 0 1 2 For Example: y > – 6 says y is greater than OR equal to – 6.

24 When graphing inequalities, the way it is graphed describes the situation. - (a dot) means equal to - (a circle) means not equal to Arrow - means greater than or less than. – 6 – 5 – 4 – 3 – 2 – 1 0 1 2 For Example: y < – 1 says y is less than OR equal to – 1.

25 y < – 2 5. Number Set { – 3, – 4, – 5, …} The only difference between solving equations and inequalities is the number of solutions. – 6 – 5 – 4 – 3 – 2 – 1 0 1 2


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